Blue Pro Micro Defaults
Sig:	0x1e9587
lfuse:	FF
hfuse:	D8
efuse:	CB

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Teensy2 as ISP > Blue Pro Micro


Backup entire flash (this won't work on a Teensy2, lockbits are set to prevent extracting the half-key bootloader on the Teensy)
avrdude -c avrisp -p m32u4 -P com5 -v -U flash:r:promicro-r.hex:r

Restore entire flash
avrdude -c avrisp -p m32u4 -P com5 -v -U flash:w:promicro-r.hex:r

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2k boot

lfuse:	FF
hfuse:	DB
efuse:	C3

Changing fuses
avrdude -c avrisp -p m32u4 -P com5 -v -U lfuse:w:0xFF:m -U hfuse:w:0xDB:m -U efuse:w:0xC3:m

Burning LUFA HID
avrdude -c avrisp -p m32u4 -P com5 -v -U flash:w:BootloaderHID.hex:i

CLI for flashing firmware when using LUFA HID Bootloader
hid_bootloader_cli -mmcu=atmega32u4 -v -w ergo-reg.hex

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1k boot

lfuse:	FF
hfuse:	DD
efuse:	C3

Changing fuses
avrdude -c avrisp -p m32u4 -P com5 -v -U lfuse:w:0xFF:m -U hfuse:w:0xDD:m -U efuse:w:0xC3:m

Burning BootHID
avrdude -c avrisp -p m32u4 -P com5 -v -U flash:w:BootHID.hex:i

Flash firmware with BootloadHID or HIDBootFlash